ENV100H1 Chapter Notes -Endocrine System, Hormesis, Microorganism

• School: UTSG
• Department: School of Environment
• Course: ENV100H1
• Professor: Stephen Scharper

Document Summary

19% of cndaian population aged 15 + =smokers in 2007. Now teenage girls r smoking more than boys. Risk is the possibility of suffering harm from a hazard that can cause injury, disease, death, economic loss and env damage. Risk assessment= scn process of estimating how much harm a hazard can cause to human health. Risk management involves deciding whether/how to reduce a risk to a certain lvl and at what cost. Cultural: unsafe working conditions, smoking, poor diet, unsafe sex, pov, assault. The harm caused by exposure to a chemical depends on the amount of exposure(dose) Toxicity measure how harmful a substance is in causing injury, illness or death to a living organism. Depends on genetic makeup that determines an individual"s sensitivity. 5 factors can affect harm caused by a substance. 1-solubility; it can move thru the env and get into water supplies and the aqueous solutions that surround the cells in our bodies.